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Patented Apr. 4,1893.

J. W. HILTON. i sTovB 0R HEATER,

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UNITED STATES PATENT JOHN W'. HILTON, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO BENJAMIN P. NEWELL, OF SAME PLACE.

STOVE OR HEATER.

SPECIFICATION forming part of Letters Patent No. 494,809, dated April 4, 1893.

Application led December 27, 1892. Serial No. 456.417. (No model.)

To a/ZZ wiz/om, it may concern:

Be it known that I, JOHN W. HILTON, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Stoves and Heaters; and l do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the annexed drawings, which form partof this specification.

The object of my invention is to construct a stove or other similar heating-apparatus in such a manner as to insure an automatic charging of the furnace when the fuel therein has burned down to a certain level,which result is accomplished, as follows. The grate of the apparatus is so arranged as to be moved up and down within the shell or casing, and is usually suspended from an external lever provided with an adjustable weight, or its equivalent, which weight can be so applied as to cause an upward shifting of said grate, at the proper time. Furthermore, this lever is adapted to operate a cut-off at the lower end of an inclined chute communicating either with an elevated bin or magazine containing the coal or other fuel. The arrangement of these devices is such as to keep the cut-off 'closed while the furnace is full, but before the fire in the same gets too low, the weight on the lever elevates the grate, opens the cut-off, and thus ire-charges the apparatus, as hereinafter more fully described.

In the annexed drawings, Figure l is aside elevation showing my improvements applied to a heating-stove, the grate and cut-off being in their normal positions. Fig. 2 is a vertical section taken from front to rear of the stove, the grate and eut-od being elevated to permit the recharging of the furnace. Fig. 3 is a horizontal section of the stove, taken in the plane of the lever-pivots ee. Figeis an enlarged vert-ical section through one of said pivots and its accessories. Fig. 5 is an enlarged front elevation of a portion of the cut-od.

A represents the outer shell or casing of a stove or other similar heating apparatus, which casing is represented as square in transverse section, although it may be made circular or of other desired shape. a represents the furnace door of this casing, o.' the ash-pit door, and a the neck to which the smoke pipe is applied. Attached to the front plate of this casing, and near the top of the same, is an inclined chute B, leading to a coal-bin,

or stove-magazine or other elevated source of fuel supply, the delivery end of said chute being normally closed with a reciprocating cut-off C, whose lower margin is, preferably, provided with a series of V-shaped slots c, as represen ted in Fig. 5. This cut-off is confined to a proper path by guides within the casing, and is operated by a pair of external rods D, D', whose lower ends are coupled to the forks E, E', of a lever F, said forks being pivoted 4to said casing at e. e', as seen in Fig. 3.

f is a shiftable weight carried by lever F. Passing through these forks are studs g. g. projecting horizontally and outwardly from a square box or frame G, adapted to be readily moved up and down within the casingA. This box is open at top, but provided at bottom with grate-bars H, having, usually the semicircular shape seen in Fig. 2.

I is afurnace lining resting upon bearers t'. f. of the shell or casing, the sides of which latter are slotted vertically at J. J. to permit free play ot' the studs g. g. and the slots being covered with slides K. K', that traverse guides 7o. Zt', as more clearly seen in Fig. Il.

The operation of this heating-apparatus is, as follows. The Weight f is first properly adjusted to compel an elevation of the grate H before the fire in the furnace has burned entirely out, which adjustment is all the attention the stove requires. Therefore, when the stove is charged with fuel the weight of the same Will force they grate down to the position indicated by dotted lines in Fig. l, thereby closing the eut-off C, and preventing any further supply of coal, for the time being. But as the coal is consumed, the weight in the grate gradually diminishes, and when the fuel has burned down to a certain level, the load becomes less than the weightf. Consequently, when this level is reached, said weight automatically lifts the grate to the position seen in Fig. 2, and as the cut-od C moves in unison with the grate, said cut-off is accordingly opened. A supply of Afuel now runs from the chute B directly down into the furnace,and

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as soon as it is properly filled, the accumulated Weightdepresses the grate, thereby closing the cut-offk C and preventing any further admission of coal. This descent of the grate is somewhat sudden and produces sufcient concussion to rattle out the ashes and cinders, which fall into the pit at the base of the stove.

In the modification of my invention, seen in Fig. 2, the weight is omitted from lever F, and a spring L substituted therefor, the pull of which spring is regulated by a tension device Z. In another modification, an outer jacket may surround the stove, so as to conceal the forks, slides and other operative parts, ory

these parts may be located Within the casing, but as such an arrangement would expose them to 'the intense heat of the furnace, it would be objectionable in some cases.

I claim as my invention- 1. The combination, in a heating-apparat us,

2. The combination,inaheating-apparatus, of a vertically-slotted casing A J J', forked lever E E F, pivoted thereto, reciprocating grate H, tted Within said casing and furnished with a pair of studs g. g. and slides K, K', applied to the exterior of said casing, said studs g. g. being passed through the slots J. J and engaged with said slides K, K', and forks E, E', as herein described, and for the purpose stated.

3. Thecombination, in a heating-apparatus, of a casing A, having vertical-slots J, J', a forked leverEE F.pivoted to said casingand carrying a Weightf, a cut-0E C, coupled to said .forks E, E', by rods D,D and a reciprocating grate H, fitted Within said casing and having studs g. g. that traverse said slots J. J. and engage with said forks, all as herein described, and for the purpose stated.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN W. HILTON. Witnesses:

J AMES H. LAYMAN, BENJ. P. NEWELL. 

